140561241 has 4 divisors (see below), whose sum is σ = 187414992. Its totient is φ = 93707492.

The previous prime is 140561233. The next prime is 140561249. The reversal of 140561241 is 142165041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142165041 = 3 ⋅47388347.

It is an interprime number because it is at equal distance from previous prime (140561233) and next prime (140561249).

It is a cyclic number.

It is not a de Polignac number, because 140561241 - 2³ = 140561233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140561249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23426871 + ... + 23426876.

It is an arithmetic number, because the mean of its divisors is an integer number (46853748).

Almost surely, 2^140561241 is an apocalyptic number.

It is an amenable number.

140561241 is a deficient number, since it is larger than the sum of its proper divisors (46853751).

140561241 is an equidigital number, since it uses as much as digits as its factorization.

140561241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46853750.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 140561241 is about 11855.8526053591. The cubic root of 140561241 is about 519.9423518440.

The spelling of 140561241 in words is "one hundred forty million, five hundred sixty-one thousand, two hundred forty-one".